| abstract |
An ion exchange membrane is provided. The ion exchange membrane includes a reaction product of a polymer and a cross-linking reagent. The polymer includes a first repeat unit, and a second repeat unit. In particular, the first repeat unit is n n n n n n n n n n and, the second repeat unit is n n n n n n n n n n wherein R + is n n n n n n n n n n A − is F − , Cl − , Br − , I − , OH − , HCO 3 − , HSO 4 − , SbF 6 − , BF 4 − , H 2 PO 4 − , H 2 PO 3 − , or H 2 PO 2 − ; X is CH 2 i YCH 2 j , i and j are independently 0, or an integer from 1 to 4; Y is —O—, —S—, —CH 2 —, or —NH—; R 1 is independently C 1-8 alkyl group; and, R 2 and R 3 are hydrogen, or independently C 1-8 alkyl group; and, the cross-linking reagent is a compound having at least two imide groups. |